Python script to translate MQTT commands to MELCloud and MELCloud status to MQTT topics

Requires paho-mqtt and the excellent pymelcloud to do the heavy lifting.

It exposes heating and hot water controls and a lot of sensors.

So far, it only supports the first Air-To-Water device in your melcloud account. I am open to adding support for Air-To-Air and multiple devices, but I don't need it myself and have no easy way to test it, so won't develop it unless someone is able and willing to test.

Device autodiscovery works with Domoticz and should work with Home Assistant.

Copy the sample.melcloudrc.json to $HOME/.melcloudrc.json and enter what I hope are obvious details, then run the script with python3. Once it's confirmed working, you'll probably want to add it to systemd or similar.

If you don't want the script to POST the data to an emoncms, then delete that section from .melcloudrc.json and it should simply skip that action.

This is messy and very much a work in progress, but it works for me. I hope it works for you, but if it doesn't, please let me know how and try not to be too upset!